a closed book
noun
: a person or thing that is difficult to understand
Even to his closest friends, he was always something of a closed book.
Examples of a closed book in a Sentence
Recent Examples on the Web
As the hundred-million-dollar suit indicates, none of the four criminal prosecutions against Trump is as yet a closed book, even though one has been dismissed (Florida) and another has resulted in a conviction (New York, on thirty-four felony counts of falsifying business records).
—
Amy Davidson Sorkin, The New Yorker, 18 Aug. 2024
For the folks charged with governing it, OpenAI seems to have been a closed book.
—Amanda Gerut, Fortune, 31 May 2024
Amy Davidson Sorkin, The New Yorker, 18 Aug. 2024
For the folks charged with governing it, OpenAI seems to have been a closed book.
—Amanda Gerut, Fortune, 31 May 2024
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'a closed book.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“A closed book.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/a%20closed%20book. Accessed 29 Sep. 2024.
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